JPS5828703Y2 - Box-shaped leaves - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic welding device for box-shaped curved members such as the poom button and arm of a power shovel.

The boom of a power excavator has a box-shaped structure with sides curved in a 10 shape.To manufacture such a box-shaped curved member, cut the top and bottom plates into the desired shape and butt them together. Make it into a box shape and fillet weld the butt parts.

The characteristics are that the length of the material to be welded is not constant but falls within a certain range, the welding points are on both the left and right edges, the surface is fine and the back side is double-sided, and high mechanical strength is required. Things like that.

The present invention aims to provide an apparatus that can automatically weld such materials to be welded very efficiently and with a relatively simple mechanism.

Next, this will be explained in detail with reference to examples.

FIG. 1 is a front view of an automatic welding device according to the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a top view thereof.

In these figures, 1 is a concrete-cast foundation;
A material to be welded 3 is attached to a support device 2 (only some claws are shown) installed on this foundation.

In this example, the material to be welded 3 is the above-mentioned boom, which is made up of 1 left and right side plates 4 (only one is connected), upper plates 5 and 6, and the like.

Reference numeral 10 denotes a gate-type running trolley, which is equipped with four running wheels 11 at the lower end, and these running wheels are connected to a pair of rails I laid on the foundation 1.
A part of it is driven by the traveling motor 12.

Beam members 13.14 are provided at the upper and intermediate parts of the gate-shaped member, and a hopper truck 25 and a pair of welding wheels 35.36 are mounted on these beam members (or the rails laid thereon). .

The gate-type traveling trolley 10 has a ladder 15° 16 and a handrail b1 on the outside.
7, a welding power source 18, operation panels 19° 19a, 20, inspection floors 21, 22, 23, a plurality of columns 24, and the like.

The hopper cart 25 has running wheels 26, its drive motor 27, a flux scattering and collection hopper 28, and its blower motor 29.
Equipped with

The hose 30.31 is divided into two forks from the lower end of the hopper 28.
hangs down to the welding area and supplies flux for submerged arc welding.

Used reusable flux hose 32.33
is collected again into the hopper 28.

Welding carts 35° and 36 have the same structure, while 3
6, this includes a wire reel 37, a welding torch 38, vertical and horizontal scanning mechanisms 39, 40, a traveling motor 41, and a wire feeding mechanism 42.

Next, to explain the operation of this welding device, the temporarily attached box-shaped curved welding material 3 is carried in by a crane, and when both ends are gripped by the support device 2, the crane moves away and the welding material 3 is taken over by the welding device. Welding equipment comes in.

This means that the operator is glued to the floor 23, etc., and the operation panel 19a
is operated to energize the motor 12, and the gate-shaped traveling carriage 10 is caused to travel along the rail I.

When the welding carts 35 and 36 reach the welding start point, the gate type traveling cart 10 stops traveling, and the motor 4 is activated so that the torch 39 can aim at the butt part between the side plate 4 and the upper and lower side plates 5 and 6 of the welding material.
1 and the like to adjust the position of the welding carts 35 and 36 and also adjust the support height of the support device 2.

When set at an appropriate position, the copying roller of the vertical copying mechanism 39 contacts the side plate 4, and the horizontal copying mechanism 40 contacts the top and bottom plates 5, 6.

These copying mechanisms and the welding torch 38 are connected to the welding carriage 36.
Since it is supported by the vertical sliding plate 36a of the side plate 4, when the height of the side plate 4 changes, the copying roller of the vertical copying mechanism 39 and the slide plate 36a move up and down to follow the height variation, and the welding part is removed. Always keep the torch height constant.

Further, the transverse scanning mechanism 40 is equipped with a limit switch, etc., which causes the transverse motor 41 to move forward and backward, causing the welding cart 36 to follow the positional fluctuations of the upper and lower face plates 5 and 6, thereby keeping the horizontal distance from the welding part to the torch constant. to hold.

Although not explained in detail, the same applies to the welding cart 35 side.

The welding material is fed in the longitudinal direction by energizing the traveling motor 12 of the gate-shaped traveling trolley 10.

In this way, the welding torches of the welding carts 35, 36 move the plates 4 and 5
, 4 and 6 are welded by submerged arc fillet welding.

Since the welding material 3 is bent in a dogleg shape, when the welding point moves toward Pl, the welding carts 35 and 36 also travel along the beam member 14 and move toward point P1, and the width of the side plate 4 increases. In the widening part, the distance between the welding carts 35 and 36 increases, and in the narrowing part, the distance decreases.

These operations are performed by the traverse motor 41 of the welding cart 35, 36, etc.

After welding on one side is completed, the support device 2 turns over the welding material 3 and allows welding on the opposite side.

The position of the hopper truck 25 is adjusted by rotating the traversing motor 27 in the forward and reverse directions using a limit switch mechanism (not shown) so that the hopper truck 25 is placed in the middle of the welding trucks 35 and 36.

In addition, since this trolley 25 is mounted above the welding trolley 35.36, it is possible to take a large distance in the welding trench, and the Norax can be easily sprayed and recovered from the two welded regions using the trolley 35.36. be able to.

When the gate-shaped traveling trolley 10 travels on the rail 1, if the ladder 16 is left in the X position, it will collide with the welding material 3.

Therefore, in the present invention, the ladder 16 is rotatably pivoted to a shaft 16a, and when traveling, the ladder 16 is rotated 90 degrees around the shaft 16a to be in a horizontal state.

Further, the control panel 20 is attached to the end of a flexible cable 20a, and this cable is wound around a winding and unwinding mechanism (not shown), so that it can be pulled to lengthen it, and released to shorten it to the state shown in the diagram. can do.

This is convenient for the operator to look at the welding torch position with the operation panel 20, operate the operation panel 20, control various drive mechanisms, and set the torch aiming position.

The support arm 19b of the operation panel 19 can rotate around a fulcrum 19c to control welding.

As is clear from the above explanation, according to the present invention, submerged arc fillet welding on both the left and right sides of a box-shaped non-linear elongated member can be performed simultaneously, and booms etc. can be produced extremely efficiently as desired. I can do it.

[Brief explanation of the drawing]

1, 2, and 3 are a front view, a side view, and a top view of a welding device according to the present invention. In the drawing, 10 is a gate-type traveling trolley, 12 is its traveling motor, 1
3.14 is a beam member, 35.36 is a welding cart, 38.38
a is a welding torch, 39.40 is a copying mechanism, 25 is a hopper stand L28 is a hopper, and 30 to 33 are flexible hoses.

Claims (1)

[Scope of Claim for Utility Model Registration] A gate-type traveling bogie that is driven by a motor and runs on rails, beam members attached to the upper and middle parts of the gate-type bogie, and a welding torch button and copying mechanism, respectively. and a pair of welding wheels each running independently along the intermediate beam member, and a flux hopper, which co-supplies flux to each welding part by the welding wheels through a flexible hose. An automatic welding apparatus for box-shaped curved members, characterized by having a hopper truck which collects 7 lux from a welding area and which travels along an upper beam in correspondence with the welding truck.